What to clean and when in a Boise home, based on December snow, spring tree pollen, 55 days of 90 degree heat, summer smoke and the fall leaf season.
Boise's seasons are clear enough to plan around. The air changes more than the rain does: inversions in winter, pollen in spring, smoke in late summer. A good cleaning calendar follows what is in the air.
The numbers below come from NOAA normals at the Boise airport, plus Idaho DEQ and the Asthma and Allergy Foundation of America. Use this as a do-it-yourself list or as a guide to timing a professional visit.
December is the wettest month at 1.54 inches and also the snowiest, with 5.6 inches, followed by January at 5.3. About 108 nights a year reach freezing. Set up a boot tray, keep two mats at the main door and wipe up melt so it does not sit on wood floors.
Idaho DEQ says winter inversions can trap pollutants near the ground, and all outdoor burning in the Treasure Valley is prohibited during an advisory. Keeping the home shut for days means dust settles rather than moves out. This is a good time for inside jobs: tops of door frames, under beds, behind the sofa and the furnace filter.
Dew points near 25 degrees also mean very dry air. Static helps dust cling to screens and electronics, so a slightly damp cloth does better than a dry one.
The 2026 Allergy Capitals report ranked Boise first of 100 metro areas, saying tree pollen peaked earlier and grass pollen began earlier and lasted longer. AAFA also linked heavy spring 2025 tree pollen to a wet winter, so a big snow year may be a hint of what spring will bring.
This is when to wash blinds, wipe window tracks and launder curtains. Wipe sills on the side of the house facing the trees first. Replace the air filter once pollen is obvious on the car, and leave shoes at the door. Keep outdoor furniture covered if you can, or wipe it before you sit, so less pollen comes in on clothes.
Yard cleanup helps indoors too. Central District Health says rats in Ada County are drawn to fallen fruit, compost, pet food and bird seed. Tidy pet food, clear crumbs from under appliances and keep the garage floor clean.
Boise averages about 55 days at 90 degrees or hotter and about 9 at 100 or hotter, with a July normal high of 92.7. August averages only 0.17 inches of rain. Air conditioning is doing the work, so vacuum vents, change the filter and wipe ceiling fan blades. Dry air and low dew points mean bathrooms clear quickly, but dust settles just as fast.
Idaho DEQ advises preparing before wildfire season, including picking a room to use as a clean room. Do this in June and not during the first smoky week. Clear that room, wipe it thoroughly and keep it ready. Once smoke arrives, keep windows shut, avoid vacuuming with a weak filter and leave the heavy cleaning until the air improves.
When smoke has passed and the nights cool off, early fall is the best time of year for a thorough clean. Fans, blinds and sills have had the whole summer's load. Book a One-Time Deep Clean now if you want a reset before the holidays, and change filters again.
Fall is also leaf season. Boise households can put up to 10 paper leaf bags a week beside the green-lidded compost cart, and the city's trees make use of that. Eagle has its own fall drop-off dumpsters and a November curbside pickup. Leaves and grit come in on shoes, so shake the mats and sweep the entry often. Before the first snow, take out the winter mats again.
The questions Boise homeowners ask most often about this topic, answered plainly.
TotalCare Cleaning will service Boise and surrounding areas with background-checked cleaners and is insured up to $1 million. Re-clean guarantee: if we missed something, tell us by the end of the next day and we come back to fix it. Beyond Clean. TotalCare.
